Hybrid photocathode based on a Ni molecular catalyst and Sb2Se3 for solar H2 production

D. Alicia Garcia-Osorio; Thomas P. Shalvey; Liam Banerji; Khezar Saeed; Gaia Neri; Laurie J. Phillips; Oliver S. Hutter; Carla Casadevall; Daniel Antón-García; Erwin Reisner; Jonathan D Major; Alexander J Cowan

doi:10.1039/D2CC04810H

Hybrid photocathode based on a Ni molecular catalyst and Sb₂Se₃ for solar H₂ production†

D. Alicia Garcia-Osorio,^a Thomas P. Shalvey,^a Liam Banerji,^a Khezar Saeed,

^ab Gaia Neri,‡^a Laurie J. Phillips,^a Oliver S. Hutter,

^ac Carla Casadevall,

^d Daniel Antón-García,

^d Erwin Reisner,

^d Jonathan D Major*^a and Alexander J Cowan

*^a

Author affiliations

* Corresponding authors

^a Stephenson Institute for Renewable Energy, University of Liverpool, UK
E-mail: acowan@liverpool.ac.uk

^b Department of Chemistry, Aarhus University, Aarhus C 8000, Denmark

^c Department of Mathematics, Physics and Electrical Engineering, Northumbria University, UK

^d Yusuf Hamied Department of Chemistry, University of Cambridge, UK

Abstract

We report a H₂ evolving hybrid photocathode based on Sb₂Se₃ and a precious metal free molecular catalyst. Through the use of a high surface area TiO₂ scaffold, we successfully increased the Ni molecular catalyst loading from 7.08 ± 0.43 to 45.76 ± 0.81 nmol cm⁻², achieving photocurrents of 1.3 mA cm⁻² at 0 V vs. RHE, which is 81-fold higher than the device without the TiO₂ mesoporous layer.

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Chemical Communications

Hybrid photocathode based on a Ni molecular catalyst and Sb₂Se₃ for solar H₂ production†

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Hybrid photocathode based on a Ni molecular catalyst and Sb₂Se₃ for solar H₂ production

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